Polish Prime Minister Jaros?aw Kaczy?ski has ordered the pharmaceutical company Jelfa to halt production following revelations that Jelfa had placed mislabelled medication on the market, whose use could be potentially fatal.

Jelfa distributed vials labelled as Corhydron, a hydrocortisone used to treat allergies and inflammation, but in fact containing Suxamethonium chloride, a drug normally used to cause muscle paralysis during emergency surgery.

The Health Ministry has appealed to people suffering from asthma or allergies to check their medication and return any Corhydron ampoules they possess to the pharmacy.

Polskie Radio reports that the mislabelling was discovered a month ago, but Jelfa and the Polish Health ministry did not inform of the problem.

Prime Minister Jaroslaw Kaczynski ordered Jelfa to halt production until it can assure the Polish Government that it can properly manage its production.

The Polish Outlook reports that that drug companies in Poland were operating unregulated since December, 2005 as the regulations has expired. The government was putting in place new regulations.

The owner of Jelfa is AB Sanitas, the largest drug producer in neighbouring Lithuania. The shut-down has been questioned by the Lithuanian Prime MinisterGediminas Kirkilas, who expressed concern over the situation and said that he wants to try to settle the issue diplomatically.